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JPL Small-Body Database Browser
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376 Geometria (A893 SC)
Classification: Main-belt Asteroid          SPK-ID: 2000376
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 79 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1721483420702741 3.6694e-08  
a 2.288248134965046 5.221e-09 au
q 1.894330012285417 8.4382e-08 au
i 5.433076918333676 4.2952e-06 deg
node 301.9865820013349 4.1548e-05 deg
peri 316.8909974148662 4.352e-05 deg
M 301.5942301476468 1.4794e-05 deg
tp 2459205.619219110561
5.2191e-05 TDB
period 1264.308630234191
n .2847406016150633 9.7452e-10 deg/d
Q 2.682166257644675 6.1198e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2845  
   data-arc span      44247 days (121.14 yr)  
   first obs. used      1899-03-06  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45969  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:04:35  

Additional Information
 Earth MOID = .883285 au 
 Jupiter MOID = 2.40107 au 
 T_jup = 3.575 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.5   n/a MPO502156 IRAS observations used: 12
diameter diameter 35.465 km 0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 7.74 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Barucci, M.A.; Di Martino, M. (1984) Astron. Astrophys. Suppl. Ser. 57, 103-106.]
[Zeigler, K.W. (1987) Minor Planet Bull. 14, 11-12.]
[Hainaut-Rouelle, M.-C.; Hainaut, O.R.; Detal, A. (1995) Astron. Astrophys. Suppl. Ser. 112, 125-142.]
[Kryszczynska, A.; Colas, F.; Berthier, J.; Michalowski, T.; Pych, W. (1996) Icarus 124, 134-140.]
[Michalowski, T.; Kaasalainen, M.; Marciniak, A.; Denchev, P.; et al. (2005) Astron. Astrophys. 443, 329-335.]
[Behrend, R. (2006) Observatoire de Geneve web site,]
[Torppa, J.; Hentunen, V.-P.; Paakkonen, P.; Kehusmaa, P.; Muinonen, K. (2008) Icarus 198, 91-107.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
geometric albedo albedo 0.321   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.891   0.039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=10.53, mean=14.69, max.=16.93) deg.
U-B UB 0.476   0.018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=10.53, mean=14.69, max.=16.93) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Sl   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

376 Geometria (A893 SC)          Discovered 1893-Sep-18 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A893 SC = 1950 BQ1 = 1954 BJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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